Disk plow.



No. 682,244. Patented Sept. no, IQGI. c. a. DAVIS.

DISK PLOW.

m 1;" filed A 1-. 29 1' (Nn Mudel.) 3 Sheets-She'et I.

W] 535E INVENTOR 440mg I 2 I Atlorney No. 682,244. Patented Sept. I0,lam", c. n. DAVIS.

DISK PLOW.

lAppIica-tion filed A r 29, 1901 3 Sheets-Sheet 2.

(No Model.)

[NV NTOR Patented Sept I0, l90l.

0. a. DAVIS.

DISK PLOW. (Applicatiun med Apr. 29, 1901.)

a sneaks-shew a.

(No ModeLf M INVENTOR J &

Allarnqy UNITED STATES PATENT EEicE.

CALVIN R. DAVIS, OF SOUTH BEND, INDIANA, ASSIGNOR TO SOUTH BEND IRONWORKS, OF SAME PLACE.

DISK PLOW.

SPECIFICATION forming part of Letters Patent No. 682,244, datedSeptember 10, 1901.

Application filed April 29, 1901- To tZZ whom it may concern.-

Be it known that I, CALVIN R. DAVIS, of South Bend, in the county of St.Joseph and State of Indiana, have invented certain new and usefulImprovements in Disk Flows; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to an improvement in disk plows, the object of theinvention being to so connect the disk and standard that the disk can beadjusted to a fine degree to insure its proper working and compensatefor wear thereof.

A further object is to provide an improved bearing for the disk whichwill prevent lateral displacement thereof, but which will permit theready removal of the disk when desired.

A further object is to provide an improved point and shin-plate and somount the latter in relation to the disk as to prevent any possibilityof trash collecting between them to 2 5 iiiterfere with the perfectoperation of the p ow.

A further object is to provide the plow with an improved guide-wheel,which will cause the plow to run steady and prevent its vibrat- 0 ing.

WVith these objects in view the invention consists in certain novelfeatures of construction and combinations and arrangements of parts, aswill be more fully hereinafter de- 5 scribed, and pointed out in theclaims.

In the accompanying drawings, Figures 1 and 2 are views'in elevation ofopposite sides of the plow. Fig. 3 is a View in section through the diskbearing. Fig. 4 is a detached View of the disk spindle-box. Fig. 5 is aview illustrating the guide-wheel. Figs. 6 and 7 are detail views of thelandside, point, and shinplate; and Fig. 8 is a modified form oflandside, point, and shin-plate. Figs. 4:, 5, 6,

5 and 8 are views of details.

1 represents a metal beam curved downward at its rear end, forming thestandard A, and then extends forward in the form of an elongated footcontracted for the attachment of the landside 2 and is made long toreinforce the same, the foot and landside being Serial No. 58,020. (Nomodel.)

provided with alined holes for bolts 3 to secure them rigidly together.The landside 2 is provided at its forward end with a rearwardlyandupwardly projectingplate which latter is practically horizontal at itsforward end and gradually twists or inclines until at its rear end itisdisposed at an angle of about thirty degrees. To this plate 4 the point5 and shin-plate 6 (which are made integral and of chilled or hardenedmetal) are secured. The point 5 is held against the end of the landside2 by the shin-plate 6,, and the latter is made on its upper side edgewith a flange 7 to fit against the edge of plate 4- and is providedcentrally on its under face witha rib 8 to fit into acorrespondingly-shaped depression in the plate 4: and prevent anypossibility of lateral displacement of the point and shin-plate, andsaid rib is enlarged cen- 7e trally and made with a hole alining with ahole in the landside for the reception of a bolt 9, which, together witha bolt 10, secured in alined holes in the upper end of the shin-plate 6and plate 4, firmly secures the point and shin-plate in place, but whichwill permit of their ready removal when it is desired to replace themwith new ones. Instead of making the landside, shin-plate, and point asabove described I might construct the same as shown in Fig. 8. In thisform of my invention I dispense with the plate 4: and make theshin-plate l0 integral with the landside 11 and recess the latter at itsforward end to seat the upper end of the point 12, the main portionthereof being held against the forward end of the landside by a bolt 13passing through the point and landside, and the latter is made with arecess or depres sion to receive a rib 14 on the point. and preventlateral movement of the same. The standard A and beam 1 are made ontheir opposite faces with flanges 14 at each edge and with a central.depression 15, and the standard A is made with elongated slots 16 5 inthe central depressed portion thereof for the reception of bolts 17 tosecure the disk spindle-box 18 to the standard. The box 18 is conical ingeneral contour and made with a conical bore to receive the disk-spindle19 and is provided on one side with an integral bar or plate 20,projecting at an angle of about forty-five degrees to the axis of thebox 18 and projecting at each end beyond the box. The bar or plate 20 isprovided on its rear face at or near each end with transverse lugs 21 tofit into the standard between the flanges 14 and insure a rigid bearing,and is provided beside one of said lugs 21-, preferably the up per one,with a tooth 22 to fit into any one of a series of notches or serrations23 on the standard and be held therein by the bolts 17. The bolts 17 arepassed through holes in the ends of bar or plate 20 and slots 16 instandard A and provided on their threaded ends with angular washers 24to fit between the flanges 14 of the standard and are secured in placeby nuts 25, the bar or plate 20 being of sufficient width to be heldflat against the standard without bringing the box 18 against or incontact therewith, the sole support of the box being the bar or plate20, which is firmly held against the standard, as above explained, todispose the box at a proper angle to receive the spindle 19 and toproperly support the disk27. It will thus be seen that I am enabled tomove the box 18 and secure it at the finest adjustment, as the slots 16will permit the bolts 17 to be moved therein when the nuts 25 areloosened, and the spindle-box 18 can be moved a distance of one notch ormore and then rigidly secured in place with no danger of-the boxslipping should the nuts become slightly loosened during the operationof the plow. The outer or forward side of the bar or plate 20 is madewith a curved recess to receive the circular and beveled enlarged head28 on the spindle 19 and permit the latter to freely revolve, said head28 being concave on its outer face to permit the disk to lie flatthereagainst and insure to it a large and firm hearing. The spindle 19is provided with a central hole for the bolt 29, which is passed througha central hole in the disk 27 and secured in the spindle by a nut 30,screwed onto the rear end of the bolt and against the end of the box 18to hold the disk on the spindle and the latter in the box. plate 6 issupported in close proximity to the periphery or edge of the disk, asclearly shown in Fig. 1, the upper end being extremely close to thedisk, and the edge of the disk gradually retreats from the edge of theshin plate from the upper to the lower end thereof, where it is spacedthe greatest distance therefrom, so as to permit any trash which may becaught by the disk to escape past the shin-plate and not retard the.movement of the disk and interfere with the perfect operation of theplow. The handles 32 are secured to the beam 1 by a bolt 33, passedthrough alinedholes in the handles, beam, and wedge-shaped blocks 34 tohold the handles in proper position relative to each other, and a nut isscrewed onto the end of the bolt 33 to secure all of said parts inplace. Wooden braces 35 are located between the handles and securedthereto at The inner end of the shin their respective ends, and a metalbrace 36 is disposed between the handles near the beam 1 and secured atits respective ends to the handles by bolts, as shown. The brace 36 isconnected by a twisted bar 37 with the standard A, bolts being employedto secure the bar to the brace and standard. The brace 36 is providednear one end with an elongated slot 38 for the reception of an eyebolt39, which latter is first passed through a block or clip 39, havingflanges at its upper and lower edges to fit over the edges of the brace,and a washer 40 is interposed between a nut 41 on the threaded end ofthe bolt and brace. The block 39 is made with a beveled opening largeenough to permit the eye of the bolt to be drawn therein by the nut 41far enough to clamp a rod 42 securely against a notched flange 43 on theblock 39". The rod 42 has secured on itslower end a scraper 44, which ismade concave on its front face and the scraping edge is sharp andcurved, giving it a shearing cut when removing the soil from the disk,and being concave on its front face it also assists the disk in turningthe soil and throws the top edge of the furrow forward in advance of therest of the furrow, thereby covering up all trash and vegetation. Acasting 45 is secured on the standard A above the disk-spindle box bymeans ofa bolt 46 and is made with grooves and ribs on one side to 7receive the flange 14 on the standard and prevent movement of thecasting when secured in place by the bolt. The other or outer face ofthe casting 45 is made with parallel flanges 47, between which a rod orwheel standard 48 is secured by means of a bolt 49 together with thebolt 46, above referred to, and said casting is enlarged between thebolt-holes to permit the relative angle of the standard 48 to be changedby simply loosening one bolt and tightening up the other, the enlargedcentral portion of the casing between the bolt-holes serving as afulcrum on which the standard moves. The standard 48 is bent, as shown,and has secured thereto a scraper 49 (for the guide-wheel 50) by a bolt51, which latter also serves to secure one end of a bracerod 52 to thestandard 48, the other end of said rod 52 being bent and passed througha hole in one handle 32 and screw-threaded on its end for the receptionof a nut to secure the brace in position. The lower end of the standard48 is widened and made near each side edge with a hole alining withholes in a tongue 52, integral with and projecting at right angles to aspindle-box 53, which is made with a slightly-conical here to receive asimilarly-shaped spindle 54, integral with a plate 55, secured to theguidewheel 50 by bolts, as shown, and said plate is made with a circularflange 56 to inclose the end of the box 53 and prevent the entrance ofdirt and grit therein. Said spindle 54 is made with a central hole forthe reception of a bolt 57, on which latter a washer 58 is 10- cated andsecured in the enlarged and flanged end of the boX bya nut 59 to securethe spindle therein. The tongue 52 is made thickest at its centerbetween the bolt-holes and slopes or inclines to its edges to permit therelative angle of the tongue and boX 53 to be changed by simplyloosening one bolt and tightening the other, as the central or widestportionof the tongue will serve as a fulcrum on which the tongue isturned to change the angle of the guide-wheel, as will be readilyunderstood. This guide-wheel 50 runs in the corner of the furrow andlessens the friction of the soil on the landside-shoe, also causing theplow to run steady. The guide-wheel is made with an oval face or, inother words, a rounded periphery, which sinks a short way into the soil,forming a hold for the wheel and preventing the plow vibrating to eitherside, thus insuring a straight and even furrow. Besides it is found bypractice that the oval-faced rim sheds the soil more readily than otherforms of face. Itis important thatthe relative angle of thewheel-standard to the plow-standard and the guide-wheel to thewheel-standard can be adjusted, for the plow has a tendency in somesoils to work away from the wall of the furrow and the wheel can by themeans above described be set at the proper angle to cause the plow torun true. The plow-standard A inclines forward from its upper to itslower end just enough so that when a portion of the disk is worn off andit becomes necessary to lower the disk it is moved forward at the sametime it is lowered, thus always maintaining the disk close to theshin-plate, which is, in effect, a part of the landside terminating infront of the disk, the rear portion of which may be termed a section ofmoldboard which conforms to the face of the rotary moldboard or disk,but is somewhat higher on its face than the face of the disk. This isrequired on account of the shin-plate wearing much faster than the faceof the disk, and which makes it sure to carry all the soil onto thedisk. When the point becomes dull and worn and is to be replaced by anew one, the operator has the benefit of an entirely new cutting edgethe full length of the point, while with the plows and landside in onepiece the operator was compelled to throw away the landside before wornout on account of the point being dull or badly worn. In this inventionthat part of the shinplate which extends above the landside is curved into meet the edge of the disk and is exactly the shape to out what soilthe disk will turn and no more and also leaves the wall-furrow in goodshape to be turned the next time around. The plow-point assists inkeeping the plow in the ground and making it run steady. The point isjust wide enough to cut out the ridge which would otherwise remain inthe furrow. The shin-plate at its top or inner edge lies close to thedisk, while the space between the lower edge and the disk is greater, sothat in case trash be carried between the point and the disk it willreadily pass and will not stop the rotation of the disk, as is a commonfault with plows of this character heretofore known.

Various slight changes might be resorted to in the general form andarrangement of the several parts described without departing from thespirit and scope of my invention, and hence I would have it understoodthat I do not wish to limit myself to the precise details set forth, butconsider myself at liberty to'make such slight changes and alterationsas fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a plow, the combination with a standard having a series of notchestherein and a landside, of a moldboard-support having a tooth thereon toengage said notched portion of the standard, means for holding the toothin a notch and a revoluble moldboard mounted on said support.

2. In a plow, the combination with a stand ard having a series ofnotches therein, of a spindle-box having a tooth thereon to fit into anyone of the notches in the standard, bolts passed through said box andslots in the standard to hold the tooth in a notch, and a moldboardhaving a journal mounted in said journal-box.

3. In a plow, the combination with a standard having elongated slotstherein and a se' ries of notches, of a revoluble moldboard, aspindle-box for the journal of the moldboard, a bar on said spindle-boxadapted to fit against the standard and having bolt-holes therein, atooth on said bar to engage the notched portion of the standard, andbolts passed through said bolt-holes in the bar and the slots in thestandard to clamp the tooth in a notch and to permit of the adjustmentof the tooth from one notch to another.

4. In a plow, the combination with a standard inclining forward from itsupper to its lower end, a forwardly-projecting foot on the lower end ofsaid standard, a landside secured to the foot and a shin-plate securedto the landside, of a rotary moldboard or disk adj ustably and revolublyconnected to the standard and having its edge disposed close to theupper edge of the shin-plate and retreating therefrom to the lower edgeof the shin-plate where a considerable space is left between the edge ofthe moldboard and shinplate to permit the escape of trash.

5. In a plow, the combination with a standard, a rotary moldboard ordisk revolubly connected to the standard between its ends and a landsideconnected to the lower end of the standard, of a plow-point and ashinplate secured to said landside, the rear edge of the shin-plate'atits upper end disposed close to the edge of the moldboard or disk andsaid rear edge of the shin-plate then gradually sloping away from theedge of the disk.

I 6. lhe combination of a standard, a landside secured thereto, amoldboard mounted on the standard, a plow-point having bearing againstthe landside, a rib on the face of the part of the point which liesagainst the landside, said rib fitting into a depression in the landsideand a bolt passing through the landside, point and the rib on thelatter.

7. The combination with a landside and an inclined rearwardly-projecting plate integral therewith,0f a combined plow-point and shinplatehaving a rib on its under face to fit into a depression in thefirst-mentioned plate, and a bolt securing said parts together and amoldboard in rear of the rear edge of said shinplate.

8. A bearing for a rotary conca'vo-convex moldboard or disk, comprisinga spindle-box having a conical bore, a bar integral with said box andprojecting at an angle thereto and adapted to support the b0X, a hollowspindle in said box, an enlarged head at the forward end of the spindlehaving a concave face to receive the convex rear face of the disk, aheaded bolt passed through said disk and spindle and a nut screwed ontosaid bolt and against the rear end of the box.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

CALVIN DAVIS.

Witnesses:

EDWIN ,NIOAR, H. GAIL DAVIS.

